1 /*-
2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * a) Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 *
10 * b) Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the distribution.
13 *
14 * c) Neither the name of Cisco Systems, Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31
32 /* $KAME: sctputil.h,v 1.15 2005/03/06 16:04:19 itojun Exp $ */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD: releng/8.0/sys/netinet/sctputil.h 196261 2009-08-15 21:37:16Z tuexen $");
36 #ifndef __sctputil_h__
37 #define __sctputil_h__
38
39
40 #if defined(_KERNEL) || defined(__Userspace__)
41
42 #define SCTP_READ_LOCK_HELD 1
43 #define SCTP_READ_LOCK_NOT_HELD 0
44
45 #ifdef SCTP_ASOCLOG_OF_TSNS
46 void sctp_print_out_track_log(struct sctp_tcb *stcb);
47
48 #endif
49
50 #ifdef SCTP_MBUF_LOGGING
51 struct mbuf *sctp_m_free(struct mbuf *m);
52 void sctp_m_freem(struct mbuf *m);
53
54 #else
55 #define sctp_m_free m_free
56 #define sctp_m_freem m_freem
57 #endif
58
59 #if defined(SCTP_LOCAL_TRACE_BUF) || defined(__APPLE__)
60 void
61 sctp_log_trace(uint32_t fr, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f);
62
63 #endif
64
65 #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id)
66
67
68 /*
69 * Function prototypes
70 */
71 uint32_t
72 sctp_get_ifa_hash_val(struct sockaddr *addr);
73
74 struct sctp_ifa *
75 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock);
76
77 struct sctp_ifa *
78 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock);
79
80 uint32_t sctp_select_initial_TSN(struct sctp_pcb *);
81
82 uint32_t sctp_select_a_tag(struct sctp_inpcb *, uint16_t lport, uint16_t rport, int);
83
84 int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, int, uint32_t, uint32_t);
85
86 void sctp_fill_random_store(struct sctp_pcb *);
87
88 void
89 sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *,
90 struct sctp_nets *);
91
92 void
93 sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *,
94 struct sctp_nets *, uint32_t);
95
96 int
97 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id);
98
99 void
100 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t);
101
102 void
103 sctp_add_to_readq(struct sctp_inpcb *inp,
104 struct sctp_tcb *stcb,
105 struct sctp_queued_to_read *control,
106 struct sockbuf *sb,
107 int end,
108 int inpread_locked,
109 int so_locked
110 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
111 SCTP_UNUSED
112 #endif
113 );
114
115 int
116 sctp_append_to_readq(struct sctp_inpcb *inp,
117 struct sctp_tcb *stcb,
118 struct sctp_queued_to_read *control,
119 struct mbuf *m,
120 int end,
121 int new_cumack,
122 struct sockbuf *sb);
123
124
125 void sctp_iterator_worker(void);
126
127 int find_next_best_mtu(int);
128
129 void
130 sctp_timeout_handler(void *);
131
132 uint32_t
133 sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *,
134 struct sctp_nets *, struct timeval *, int);
135
136 uint32_t sctp_calculate_len(struct mbuf *);
137
138 caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *);
139
140 struct sctp_paramhdr *
141 sctp_get_next_param(struct mbuf *, int,
142 struct sctp_paramhdr *, int);
143
144 int sctp_add_pad_tombuf(struct mbuf *, int);
145
146 int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *);
147
148 void
149 sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *, int
150 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
151 SCTP_UNUSED
152 #endif
153 );
154
155 void
156 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
157 struct sctp_inpcb *new_inp,
158 struct sctp_tcb *stcb, int waitflags);
159
160
161 void sctp_stop_timers_for_shutdown(struct sctp_tcb *);
162
163 void
164 sctp_report_all_outbound(struct sctp_tcb *, int, int
165 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
166 SCTP_UNUSED
167 #endif
168 );
169
170 int sctp_expand_mapping_array(struct sctp_association *, uint32_t);
171
172 /* EY nr_sack version of the above method, expands nr_mapping_array */
173 int sctp_expand_nr_mapping_array(struct sctp_association *, uint32_t);
174 void
175 sctp_abort_notification(struct sctp_tcb *, int, int
176 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
177 SCTP_UNUSED
178 #endif
179 );
180
181 /* We abort responding to an IP packet for some reason */
182 void
183 sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *,
184 struct mbuf *, int, struct sctphdr *, struct mbuf *, uint32_t, uint16_t);
185
186
187 /* We choose to abort via user input */
188 void
189 sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, int,
190 struct mbuf *, int
191 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
192 SCTP_UNUSED
193 #endif
194 );
195
196 void
197 sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *,
198 struct sctp_inpcb *, struct mbuf *, uint32_t, uint16_t);
199
200 int
201 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
202 int totaddr, int *error);
203
204 struct sctp_tcb *
205 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
206 int *totaddr, int *num_v4, int *num_v6, int *error, int limit, int *bad_addr);
207
208 int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *);
209
210 #ifdef INET6
211 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
212
213 struct sockaddr_in6 *
214 sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
215
216 #define sctp_recover_scope_mac(addr, store) do { \
217 if ((addr->sin6_family == AF_INET6) && \
218 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
219 *store = *addr; \
220 if (addr->sin6_scope_id == 0) { \
221 if (!sa6_recoverscope(store)) { \
222 addr = store; \
223 } \
224 } else { \
225 in6_clearscope(&addr->sin6_addr); \
226 addr = store; \
227 } \
228 } \
229 } while (0)
230 #endif
231
232 int sctp_cmpaddr(struct sockaddr *, struct sockaddr *);
233
234 void sctp_print_address(struct sockaddr *);
235 void sctp_print_address_pkt(struct ip *, struct sctphdr *);
236
237 int
238 sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *,
239 int, int
240 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
241 SCTP_UNUSED
242 #endif
243 );
244
245 struct mbuf *sctp_generate_invmanparam(int);
246
247 void
248 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
249 struct sockaddr *sa, sctp_assoc_t assoc_id,
250 uint32_t vrf_id, int *error, void *p);
251 void
252 sctp_bindx_delete_address(struct socket *so, struct sctp_inpcb *inp,
253 struct sockaddr *sa, sctp_assoc_t assoc_id,
254 uint32_t vrf_id, int *error);
255
256 int sctp_local_addr_count(struct sctp_tcb *stcb);
257
258 #ifdef SCTP_MBCNT_LOGGING
259 void
260 sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *,
261 struct sctp_tmit_chunk *, int);
262
263 #else
264 #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \
265 do { \
266 if (tp1->data != NULL) { \
267 atomic_subtract_int(&((asoc)->chunks_on_out_queue), chk_cnt); \
268 if ((asoc)->total_output_queue_size >= tp1->book_size) { \
269 atomic_subtract_int(&((asoc)->total_output_queue_size), tp1->book_size); \
270 } else { \
271 (asoc)->total_output_queue_size = 0; \
272 } \
273 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
274 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
275 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \
276 atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); \
277 } else { \
278 stcb->sctp_socket->so_snd.sb_cc = 0; \
279 } \
280 } \
281 } \
282 } while (0)
283
284 #endif
285
286 #define sctp_free_spbufspace(stcb, asoc, sp) \
287 do { \
288 if (sp->data != NULL) { \
289 if ((asoc)->total_output_queue_size >= sp->length) { \
290 atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \
291 } else { \
292 (asoc)->total_output_queue_size = 0; \
293 } \
294 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
295 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
296 if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \
297 atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \
298 } else { \
299 stcb->sctp_socket->so_snd.sb_cc = 0; \
300 } \
301 } \
302 } \
303 } while (0)
304
305 #define sctp_snd_sb_alloc(stcb, sz) \
306 do { \
307 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \
308 if ((stcb->sctp_socket != NULL) && \
309 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
310 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
311 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \
312 } \
313 } while (0)
314
315 /* new functions to start/stop udp tunneling */
316 void sctp_over_udp_stop(void);
317 int sctp_over_udp_start(void);
318
319 int
320 sctp_soreceive(struct socket *so, struct sockaddr **psa,
321 struct uio *uio,
322 struct mbuf **mp0,
323 struct mbuf **controlp,
324 int *flagsp);
325
326
327 /* For those not passing mbufs, this does the
328 * translations for you. Caller owns memory
329 * of size controllen returned in controlp.
330 */
331 int
332 sctp_l_soreceive(struct socket *so,
333 struct sockaddr **name,
334 struct uio *uio,
335 char **controlp,
336 int *controllen,
337 int *flag);
338
339
340 void
341 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d);
342
343 void
344 sctp_wakeup_log(struct sctp_tcb *stcb,
345 uint32_t cumtsn,
346 uint32_t wake_cnt, int from);
347
348 void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int);
349
350 void sctp_log_nagle_event(struct sctp_tcb *stcb, int action);
351
352
353 void
354 sctp_log_mb(struct mbuf *m, int from);
355
356 void
357 sctp_sblog(struct sockbuf *sb,
358 struct sctp_tcb *stcb, int from, int incr);
359
360 void
361 sctp_log_strm_del(struct sctp_queued_to_read *control,
362 struct sctp_queued_to_read *poschk,
363 int from);
364 void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t);
365 void rto_logging(struct sctp_nets *net, int from);
366
367 void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc);
368
369 void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from);
370 void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t);
371 void sctp_log_block(uint8_t, struct socket *, struct sctp_association *, int);
372 void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t);
373 void sctp_log_mbcnt(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
374 void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
375 int sctp_fill_stat_log(void *, size_t *);
376 void sctp_log_fr(uint32_t, uint32_t, uint32_t, int);
377 void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int);
378 void sctp_log_map(uint32_t, uint32_t, uint32_t, int);
379
380 void sctp_clr_stat_log(void);
381
382
383 #ifdef SCTP_AUDITING_ENABLED
384 void
385 sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *,
386 struct sctp_nets *);
387 void sctp_audit_log(uint8_t, uint8_t);
388
389 #endif
390
391
392 #endif /* _KERNEL */
393 #endif
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